Valve-operating mechanism for explosive-engines.



V A. WINTON. VALVE OPERATING MECHANISM FOR EXPLOSIVE ENGINES. APPLICATION FILED APR. 29 1911 1,01 1,695, Patented De0.12,1911.

is of an ordinary ALEXANDER WINTON, CLEVELAND, OHIO.

VALVE-OPERATING MECHANISM FOR EXPLOSIVE-ENGINES Specification of Letters Patent.

Application filed April 29, 1911. Serial No. 624,149.

Patented nee. 12, 1911.

To all whom it ma/y concern:

I Be it known that I, ALEXANDER WINITON,

afcitizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Valve-Open ating Mechanism for Explosive-Engines, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates tovalve operating mechanism-for explosive engines, of the improved form hereinafter pointed out.

Itis well-known to those skilled in this art that a-certain amount of clearance between the cam operated member and the valve stem is necessaryto permit the proper seating of thevalves in explosive engines.

The object of my present invention is to provide this clearance between the said members and to provide an intervening member which will prevent the noise occasioned by the clearance in valve operating mecha- The accompanying drawing is a combined sectional and side elevation of two valves of an explosion engine, one being shown'lifted off its seat and the other resting on its seat.

Referrin now to the drawings, 1 is a valve housing of any suitableformyand 2 the valve seats in this housing.- I here show two valves 3 and 4 only, for the purpose of illustrating my improvement,'but the number of valves is immaterial to the invention;

The usual valve operating mechanism comprises a cam 5, a valve-stem 6, an expanded spring 7 which normally holds the valve seated, a movable member 8 carrying a roller 9, the roller 9 adapted to be engaged by the cam 5; and an adjustable member 10 located between the valve stem and the movable member 8. The form here shown type, though my invention, as will appear ereinafter, is not limited to this specific form. In all ,forms of valve mechanisms for explosive engines lmown to me, there is a clearance betweenthe valve stem and the member, or members, located between the valve stem and the cam 5. In; the form of valve mechanism here shown this clearance is illustrated in the drawin at 11. In all forms of valve operating me'c anisms known to me the member or members located between the valve stem and the cam have weight and are continually in reversal of mot-ion, and this causes noise as the intercam 5, a normally vening parts are moved or slapped back and forth through this clearance.

Thus far I have described one of the ordinarytypes of valve-operating mechanisms. My improvement consists in locating a member between the said valve stem and the cam, which is normally projecting through this clearance space and normally exerting a separating tension between the valve and the cam, but

a tension of a much less degree" or strength than the tension or strength of the spring which normally holds the valve seated. This separating tension normally holds the parts intervening between the valve stem and the cam in contact with the cam and prevents the noise occasioned by the slapping action of the said continuously reversed motion of j the parts and at the same time performs a cushioning effect between the valve stem and the seat cam. In the type of valve mecha nism here shown this normally separating efiect is accomplished by placing between the valve stem 6 and the members 8, 9 and 10 which intervene between the stem and outwardly projected meme ber a. In the construction here shown, this normally-projected member a is located in theadjustable member 10 and a spiral spring 6 normally serves to project the member a through the clearance space 11 and against the lower end of the valve stem 6. It will be observed that this normally projected member a has its outer end constantly in engagement with the lower end of the valve stem 6, and serves to constantly hold the roller 9 in-contact with the cam 5, and by reason of this action the noise occasioned, as aforesaid, is prevented and the cushioned efl'ect above mentioned is effected.

The broad application of my present im provement is not limited to use in the particular type of valve mechanism here shown,

but is adapted to be used with other formsof,

valve mechanism, and I do not, therefore limit the broad scope of my invention to this particular type of valve operating mecha- IllSIl'l.

Having thus described my invention, what I claim and desire to secure by Letters Pat- 1. A valve operating mechanism comprising a valve having a stem, to normally hold the valve table cam, a reciprocating mechanism between the cam and said valve stem, an adjustable nut immediately between the valve a 'sprlng'acting closed, a rota' said valve stem, and a spring projected member carried Within the outer end of said adjustable nut for the purpose described.

In testimony whereof I hereunto afiix my 15 signature in the presence of two Witnesses. ALEXANDER WINTON. Witnesses:

O. F. BAUGHMAN,

W. J. WARD. 

